They're too small to really be critiqued.
So all I can say is that backlit dandelion photos have always fascinated me, too (I have taken hundreds of them, and every time springs comes around, I feel forced to add a couple to the collection ...), and the the point of view in the second is nice. I don't see any application of selective colouring in that one, though, TBAM. I can only just make out the use of vignetting, and I personally don't like it, but hey, that's just me here! I know that many, many like vignetting!